Dado saw blade



FIG. 1 is a perspective view of a dado saw blade showing my new design;

FIG. 2 is a front elevational view, the rear being a mirror image thereof;

FIG. 3 is a top plan view; and

FIG. 4 is a side elevational view taken from the right of FIG. 1, the side opposite being a mirror image thereof. 

The ornamental design for a dado saw blade, as shown and described. 